The question refers to a reaction scheme and product options, but in the provided prompt the actual reaction diagram and the structures of options A, B, C, D are missing.

So, at present, the problem cannot be solved chemically because:

1. The starting compound(s) are not shown.
2. The reagent/conditions are not shown.
3. The product options A–D are blank.

Without these structural details, it is impossible to determine the major product.

What can be concluded

The stored correct answer is given as C, but since the reaction and options are absent, I cannot independently verify whether option C is correct.

Needed to solve

Please provide either:

• the reaction image, or
• the reactant structure, reagents, and all four option structures.

Then I can solve it step-by-step and verify the answer properly.